DELTA 1 DEB, 21461

Orbit data source: Space-Track

DELTA 1 DEB, 21461 is space debris in SSO originally from a launch on Thu, 12 Jun 1975 UTC launched from the Air Force Western Test Range (AFWTR). Debris objects in space refer to the collection of defunct objects orbiting the Earth. Examples of debris include non-operational satellites, rocket bodies, and fragments generated from explosions, collisions, or faulty payload assembly.

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Iframe URL

https://www.satcat.com/sats-embedded/21461?theme=dark&initialShowStats=false

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Identifier

21461, 1975-052EV

Orbit

SSO

Country

Related business

National Aeronautics and Space Administration (NASA) (US)

Manufacturer

Unknown

Mission

Spacecraft

Bus & Motor

Unknown

Mass

Unknown

Launch date (UTC)

1975-06-12 (51 years ago)

Launch vehicle

Unknown

Launch site

Air Force Western Test Range (AFWTR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Unknown shape, 0.050 m

Radar Cross Section

Medium (>0.1 m² and <1 m²)

Expand to show TLE details & history
Last TLE update: 1 day ago

TLE from 1 day ago

0 DELTA 1 DEB
1 21461U 75052EV  26301.50967471 -.00000101  00000-0 -13661-3 0  9998
2 21461  99.7310  27.2917 0205888  97.6736  21.7384 13.20525973708290

Epoch: 2026-10-28T12:13Z

TLE epoch observation values (Epoch: 2026-10-28T12:13:55.894Z)

Latitude

58.40748°

Longitude

3.05596°

Altitude

1,048.301 km

Speed

7.403 km/s

True Right ascension

14h 53m 35s

True Declination

58° 15' 35"

Sunlit

Object was in daylight at epoch

Visualization orbit readout

Latitude

Unknown

Longitude

Unknown

Altitude

Unknown

Speed

Unknown

Apparent Right ascension

Unknown

Apparent Declination

Unknown

Sunlit

N/A

Visualization observer readout

Local Sidereal Time

14:53:10

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,335.666 km

Perigee altitude

1,024.438 km

Semi-major axis

7,558.189 km

Eccentricity

0.02059

Inclination

99.731°

RAAN

27.2917°

Arg. of periapsis

97.6736°

True anomaly

22.63356°

Mean anomaly

21.7384°

Eccentric anomaly

22.18381°

Mean motion

3.30306 °/min

Orbital period

108.99 mins

BSTAR

-0.00013661

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Other satellites on launch #52 in the year 1975 (1975-06-12 UTC)

DELTA 1 DEB, 7965 (Decayed)

DELTA 1 DEB, 21279

DELTA 1 DEB, 21376 (Decayed)

DELTA 1 DEB, 42660 (Decayed)

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DELTA 1 DEB Visibility forecast

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Span	Click to sort rows by Start time (UTC) header in descending order	Start Az.	Max El. time (UTC)	Max El. Az.	Max El.	End time (UTC)	End Az.
4 mins	2026-10-30 03:52:06.613Z	69.258° E	2026-10-30 03:53:06.613Z	59.691° ENE	13.144°	2026-10-30 03:56:06.613Z	31.205° NE
11 mins	2026-10-30 05:35:06.613Z	156.581° SSE	2026-10-30 05:40:06.613Z	68.363° E	78.676°	2026-10-30 05:46:06.613Z	348.246° N
5 mins	2026-10-30 07:26:06.613Z	248.281° W	2026-10-30 07:28:06.613Z	268.454° W	15.923°	2026-10-30 07:31:06.613Z	298.037° NW
11 mins	2026-10-30 18:48:06.613Z	16.048° NNE	2026-10-30 18:52:06.613Z	28.515° NE	78.963°	2026-10-30 18:59:06.613Z	195.542° SSW

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Co-orbital & Co-planar RSOs

Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions

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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings

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Check out DELTA 1 DEB, 21461 on other resources

View DELTA 1 DEB, 21461 on Heavens-Above

View DELTA 1 DEB, 21461 on Keep Track

View DELTA 1 DEB, 21461 on Celestrak

View DELTA 1 DEB, 21461 on Gunter's Space Page

Satcat and Kayhan Space are not affiliated with NASA, Celestrak, Heavens-Above, Keep Track, or Gunter's Space Page.

DELTA 1 DEB, 21461

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 1 day ago

TLE from 1 day ago

TLE epoch observation values (Epoch: 2026-10-28T12:13:55.894Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #52 in the year 1975 (1975-06-12 UTC)

DELTA 1 DEB Visibility forecast

Co-orbital & Co-planar RSOs

Check out DELTA 1 DEB, 21461 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 1 day ago